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You can't use single quotes inside double quotes. They don't nest -- it's treated as the end of the single quote.

Awk doesn't use single quotes anyway. Use double quotes.

You can't use...

@Corona688 Think he wanted to strip leading whitespace, and a bracketed string of up to 3 digits from end of field 2 (he was using _ as the sed delimiter).

This slight change should cover it:...

Yes, exactly, except you don't need to have the entire $LIST in a variable like that (a bad idea for the reasons given above). It'd be far more efficient than cramming it into a variable. Depending...

See Useless Use of Backticks (http://partmaps.org/era/unix/award.html). Never ever use variables/backticks for open-ended lists. It's generally pointless, likely to truncate your data, and splits...